Half-Life 2

so i am able to get the model in hammer to show the changes i made to the texture, however HL model viewer, HL2, and Garrys mod DO NOT reflect my changes. i did the VTF thing and placed it into the correct dir, and set STEAM to NOT auto update.

i have experience doing this on TFC back in the day but for some reason im just missing something. So if anyone can help it would be much appreciated!